COMMUNICATION NODE, COMMUNICATION SYSTEM, AND PACKET COMMUNICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a redundant communication system which can continue relaying of a packet even when a fault occurs and in which the load of a communication network is reduced.

SOLUTION: A communication node includes: a transmission means which cyclically and sequentially gives values which can be taken as a packet ID to a packet to be transmitted, as the packet ID and transmits the packet with the ID to one or more communication nodes connected to one another; a recording means which records the packet ID of a packet received from a transmission source node; a packet determination means which compares the packet ID of the received packet with packet IDs recorded by the recording means to determine the transmission order in the transmission source node; a reception means which confirms the destination node ID of a packet determined as a new packet by the packet determination means and receives the new packet when the new packet is the one addressed to the communication node itself or is a control packet; and a relay means which relays the new packet to the one or more communication nodes connected to one another when the new packet is the one not addressed to the communication node itself or is a control packet.

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